How do get my norton internet security from 1 computer to another one?

I just bought a new computer and i want to transfer the Norton software to it from my old computer. I bought the norton online so i do not have a disk. Is there anyway that i can do this.

Japanese government seeks victims’ help to battle online hackers – Sacramento Bee

Virtually no details of such attacks or resulting damage have been disclosed to … appears to be from a friend or client of the target but actually contains a computer virus that enables hackers to access data in the target’s computer system.
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Multi computer norton internet security install?

Another member of my family got the multi computer norton anti-virus and has given me the product key and serial code. I haven’t had norton internet security on my computer before so how would I set it up?